The concrete-technology firm said it created its first batch of carbon-infused concrete at a small plant in California using sequestered CO2. Brisbane, Calif.-based Heirloom captured the CO2 using direct air capture, a technology that sucks carbon directly out of the atmosphere; CarbonCure used the wastewater from that process to store CO2 permanently in the concrete in the form of calcium carbonate. (The Logic)
Talking point: Concrete CO2 storage offers a value-add alternative to carbon capture and storage (CCS), which simply gathers carbon and stores it permanently in large underground caverns. CarbonCure, backed by tech billionaires Bill Gates and Jeff Bezos, is one of a number of companies developing technologies to store carbon in concrete. In a press release, it said it expects a robust market for CO2-injected concrete in the coming decades, and said the technology “presents a key opportunity to store immense quantities of carbon dioxide.”